Added signals to extend the order detail page

doc/development/api/general.rst

@@ -37,6 +37,12 @@ There are multiple signals that will be sent out in the ordering cycle:
 .. automodule:: pretix.base.signals
    :members: order_paid, order_placed
 
+Sale flow
+---------
+
+.. automodule:: pretix.presale.signals
+   :members: order_info
+
 Voucher system
 --------------
 

src/pretix/presale/signals.py

@@ -36,3 +36,12 @@ This signal is sent out to display additional information on the "redeem a vouch
 
 As with all plugin signals, the ``sender`` keyword argument will contain the event.
 """
+
+order_info = EventPluginSignal(
+    providing_args=["order"]
+)
+"""
+This signal is sent out to display additional information on the order detail page
+
+As with all plugin signals, the ``sender`` keyword argument will contain the event.
+"""

src/pretix/presale/templates/pretixpresale/event/order.html

@@ -1,6 +1,7 @@
 {% extends "pretixpresale/event/base.html" %}
 {% load i18n %}
 {% load bootstrap3 %}
+{% load eventsignal %}
 {% load eventurl %}
 {% block title %}{% trans "Order details" %}{% endblock %}
 {% block content %}
@@ -91,6 +92,7 @@
             {% include "pretixpresale/event/fragment_cart.html" with cart=cart event=request.event editable=False %}
         </div>
     </div>
+    {% eventsignal event "pretix.presale.signals.order_info" order=order %}
     <div class="row">
         {% if invoices %}
             <div class="col-xs-12 {% if request.event.settings.invoice_address_asked %}col-md-6{% endif %}">